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Finding the Fourth Proportional to 220,906.40, 331,456.80 and 102,516.80

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Solution

The fourth proportional to 220,906.40, 331,456.80 and 102,516.80 is: 153,820.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,906.40 : 331,456.80 = 102,516.80 : x
  2. Step 2: Convert to fraction form
    220,906.40/331,456.80 = 102,516.80/x
  3. Step 3: Cross multiply
    220,906.40x = 331,456.80 × 102,516.80
  4. Step 4: Simplify right side
    220,906.40x = 33,979,890,474.24
  5. Step 5: Solve for x
    x = 33,979,890,474.24/220,906.40
  6. Step 6: Final answer
    x = 153,820.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.